>>There is a possibility of linking together LEGO tracks and my "ERS" type tracks (free inter-connector track model is available).
>>No support is needed during printing
>>Printers with small bed sizes will do fine (for bed areas below 15x15 cm please contact me first to obtain adequate files set on order)
>>No special tools are needed during assembly

...but they appear more difficult to 3D print successfully than my tracks :)

Other than PayPal payment forms (e.g. bank transfers) are welcome and usually let me give you some discount from the regular price - if you contact me before purchase.

The rules of license you buy purchasing this 3D model are:
1.You are allowed to prepare physical objects based on this digital 3D model in a number reflecting your personal, non-commercial needs.
2.You are NOT allowed to use this digital 3D model as an element of any commercial activity.
3.You are allowed to do what you like with the produced objects: e.g. exhibit, sell, but with regard to [1].

I'll be happy to help you in case of any questions.
General support contact is:
e-mail: contact[at]euroreprap.eu